Solids, Young's Modulus

iamtrojan3

1. The problem statement, all variables and given/known data
Hang a 0.25 kg rock from the end of a spring. If the spring stretches 0.25 m, what is the spring constant?


2. Relevant equations
i'd assume
F/A=Y(Change in L/Lo)


3. The attempt at a solution
I can do it if there was Area, but there isn't. there's probably another equation for this thta i missed in class.
Thanks to anyone tat help

robb_

Looks more like a Hooke's law problem to me??

denverdoc

like as in f=-kx. what orce is present besides the springs?

iamtrojan3

yea it is hooks law, thanks again